Single- or dual-input audio amplifier/router/mixer with adjustable channel gains (expressed directly as linear multiplication factors). Each channel can be independently muted or inverted (i.e. have its sign reversed). NOTE: A linear gain factor, denoted G, corresponds to the logarithmic gain specified in dB, denoted GdB, according to the formula: G dB = 20 log10 G. The logarithmic gain is most commonly used in audio since the human hearing response is logarithmic (in terms of perceived amplitude differences).
Signals are amplified (by muliplication by the appropriate linear gain factors), summed, and routed, using floating-point arithmetic throughout.
